chore: import upstream snapshot with attribution

tests/cli_e2e/demo/coverage.md

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+# Demo Coverage Template
+
+> This file is a demo template only.
+> It shows the expected `coverage.md` shape for real domains under `tests/cli_e2e/{domain}`.
+> The numbers, command list, and coverage status below are illustrative, not authoritative.
+> `tests/cli_e2e/demo/` is reference material and is not part of formal CLI E2E coverage accounting.
+> `lark-cli demo --help` does not exist, so this file cannot be recomputed from live domain help output.
+
+## Metrics
+
+- Denominator: 8 leaf commands
+- Covered: 3
+- Coverage: 37.5%
+
+## Summary
+
+- Purpose: show humans and AI agents how to maintain a per-domain coverage file even when the directory is documentation-only and not backed by a real `lark-cli demo` command tree.
+- TestDemo_TaskLifecycle: demonstrates one minimal task lifecycle workflow for documentation purposes.
+- TestDemo_TaskLifecycle/create: runs `task +create` with `summary` and `description`, captures the returned `taskGUID`, and registers parent cleanup for later teardown.
+- TestDemo_TaskLifecycle/update: runs `task +update --task-id <guid>` and mutates both `summary` and `description` on the created task.
+- TestDemo_TaskLifecycle/get: runs `task tasks get` for the same task and asserts the persisted `guid`, updated `summary`, and updated `description`.
+- Cleanup note: `task tasks delete` is executed in `parentT.Cleanup`, but this template intentionally keeps cleanup-only execution marked uncovered so workflow assertions remain distinct from teardown mechanics.
+- Demo-only gap note: `task +complete`, `task +reopen`, `task +assign`, and `task +get-my-tasks` are intentionally left as uncovered examples for a minimal template.
+
+## Command Table
+
+| Status | Cmd | Type | Testcase | Key parameter shapes | Notes / uncovered reason |
+| --- | --- | --- | --- | --- | --- |
+| ✓ | task +create | shortcut | task_lifecycle_test.go::TestDemo_TaskLifecycle/create | basic create; summary; description | demo example |
+| ✓ | task +update | shortcut | task_lifecycle_test.go::TestDemo_TaskLifecycle/update | --task-id; update summary; update description | demo example |
+| ✓ | task tasks get | api | task_lifecycle_test.go::TestDemo_TaskLifecycle/get | task_guid in --params | demo example |
+| ✕ | task tasks delete | api |  | none | cleanup exists in parentT.Cleanup, but demo coverage intentionally treats cleanup-only execution as uncovered |
+| ✕ | task +complete | shortcut |  | none | not shown in this minimal lifecycle example |
+| ✕ | task +reopen | shortcut |  | none | not shown in this minimal lifecycle example |
+| ✕ | task +assign | shortcut |  | none | example of a user-identity-sensitive command; requires real user fixtures |
+| ✕ | task +get-my-tasks | shortcut |  | none | example of a current-user-dependent command; often unavailable in bot-only environments |
+
+## Notes
+
+- In a real domain, recompute the denominator from live `lark-cli --help` exploration instead of copying this file.
+- Replace demo rows with real command inventory for that domain.
+- Keep skipped commands unchecked; reuse the `t.Skip(...)` reason as the uncovered reason.

tests/cli_e2e/demo/task_lifecycle_test.go

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+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package demo
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	clie2e "github.com/larksuite/cli/tests/cli_e2e"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/tidwall/gjson"
+)
+
+func TestDemo_TaskLifecycle(t *testing.T) {
+	parentT := t
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
+	t.Cleanup(cancel)
+
+	suffix := time.Now().UTC().Format("20060102-150405")
+	createdSummary := "lark-cli-e2e-create-" + suffix
+	updatedSummary := "lark-cli-e2e-update-" + suffix
+	createdDescription := "created by tests/cli_e2e/demo"
+	updatedDescription := "updated by tests/cli_e2e/demo"
+
+	var taskGUID string
+
+	t.Run("create as bot", func(t *testing.T) {
+		result, err := clie2e.RunCmd(ctx, clie2e.Request{
+			Args:      []string{"task", "+create"},
+			DefaultAs: "bot",
+			Data: map[string]any{
+				"summary":     createdSummary,
+				"description": createdDescription,
+			},
+		})
+		require.NoError(t, err)
+		result.AssertExitCode(t, 0)
+		result.AssertStdoutStatus(t, true)
+		taskGUID = gjson.Get(result.Stdout, "data.guid").String()
+		require.NotEmpty(t, taskGUID, "stdout:\n%s", result.Stdout)
+
+		parentT.Cleanup(func() {
+			cleanupCtx, cancel := clie2e.CleanupContext()
+			defer cancel()
+
+			deleteResult, deleteErr := clie2e.RunCmd(cleanupCtx, clie2e.Request{
+				Args:      []string{"task", "tasks", "delete"},
+				DefaultAs: "bot",
+				Params:    map[string]any{"task_guid": taskGUID},
+				Yes:       true,
+			})
+			clie2e.ReportCleanupFailure(parentT, "delete task "+taskGUID, deleteResult, deleteErr)
+		})
+	})
+
+	t.Run("update as bot", func(t *testing.T) {
+		require.NotEmpty(t, taskGUID, "task GUID should be created before update")
+
+		result, err := clie2e.RunCmd(ctx, clie2e.Request{
+			Args:      []string{"task", "+update", "--task-id", taskGUID},
+			DefaultAs: "bot",
+			Data: map[string]any{
+				"summary":     updatedSummary,
+				"description": updatedDescription,
+			},
+		})
+		require.NoError(t, err)
+		result.AssertExitCode(t, 0)
+		result.AssertStdoutStatus(t, true)
+	})
+
+	t.Run("get as bot", func(t *testing.T) {
+		require.NotEmpty(t, taskGUID, "task GUID should be created before get")
+
+		result, err := clie2e.RunCmd(ctx, clie2e.Request{
+			Args:      []string{"task", "tasks", "get"},
+			DefaultAs: "bot",
+			Params:    map[string]any{"task_guid": taskGUID},
+		})
+		require.NoError(t, err)
+		result.AssertExitCode(t, 0)
+		result.AssertStdoutStatus(t, true)
+		assert.Equal(t, taskGUID, gjson.Get(result.Stdout, "data.task.guid").String())
+		assert.Equal(t, updatedSummary, gjson.Get(result.Stdout, "data.task.summary").String())
+		assert.Equal(t, updatedDescription, gjson.Get(result.Stdout, "data.task.description").String())
+	})
+}